Credit & Copyright: Bill Snyder
(at Sierra Remote
Observatories)
Explanation:
Sharpless
115 stands just north and west of Deneb,
the alpha star of Cygnus the Swan
in planet Earth's skies.
Noted in the
1959 catalog
by astronomer Stewart Sharpless (as Sh2-115)
the faint but lovely emission nebula lies along the edge one of the
outer Milky Way's giant molecular clouds, about 7,500 light-years away.
Shining with
the light of
ionized atoms of hydrogen, sulfur, and oxygen
in this Hubble palette color composite image, the nebular glow is
powered by hot stars in star cluster Berkeley 90.
The cluster stars are likely only 100 million years old or so and
are still embedded in Sharpless 115.
But the stars' strong winds and radiation have
cleared away
much of their dusty, natal cloud.
At the emission nebula's estimated distance,
this
cosmic close-up spans just under 100 light-years.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Публикации с ключевыми словами:
emission nebula - star cluster - эмиссионная туманность - звездообразование - молодые звезды
Публикации со словами: emission nebula - star cluster - эмиссионная туманность - звездообразование - молодые звезды | |
См. также:
Все публикации на ту же тему >> |
Мнение читателя [1]